Water-heater.



H. J. LONG.

WATER HEATER.

APPLICATON FILED DEC. 3. 1913.

2 SHEETS-SHEET 1.

1,214,559. Patented Feb.6,1917.

67 cs c5 if if JL I 3% o;- I Inventor:

, by j iiel'fffizzy Atty H. 1. LONG.

WATER HEATER.

APPLICAT'ON FILED DEC. 3, 1913.

Patented Feb. 1%, 1911 2 SHEETS-SHLET .I v

Inventor:

b Z /Je/"Z fjlarzy HERBERT J. LONG,

OF NEW- BRUNSWICK, NEW JERSEY.

WATER-HEATER.

Specification of Letters Patent.

Patented Feb. 6, 1917.

Application filed December-3, 1913. Serial No. 804,360.

. To all whom it may concern:

desired gas control but,

Be it known that I, HERBERT. J. Lone, a citizen of the United States ofAmerica, and residing at' New Brunswick, in the county of Middlesex andState of New Jersey, have invented certain new and useful Improvementsin ater-Heaters, of which the following is a specification, such as willenable those skilled in the art to which it appertains to make and usethe same.

This invention relates to gas-burning, Wa-

ter-heating, devices, and the object thereof is to provide heaters ofthis class in which the gas supply is automatically controlled by thetemperature of the heated water.

I'am aware that thermostatic means have heretofore been employed toaccomplish the in those of which I have knowledge, the thermostaticaction is directly on'the gas valve through a system of multiplyinglevers which is cumbersome, costly, and not always effective.

In my present device I primarily control the gas supply by means of thecold water admitted into a suitable receptacle when a faucet o; the likeis opened at a distant point to permit the water to pass through theheater clearly set forth in my Letters Patent of the United Stateshearing date of March 11,

1913, No.1,055fll78, and to which I now add a thermostatic gas control.My thermostatic control does not, however, connect directly with the gasvalve but said gas valve is indirectly controlled by the directthermostatic control of the passage of water through the heater or, morestrictly, through a casing having my thermostatic element containedtherein. \Vhcre a thermostatic element is in direct control of the gassupply constantly varying temperatures.ot the heated water results whenbutsmall quantities oi water are successively discharged by the repeatedturning on or oil of a faucet as is usually the case in basins by reasonof thei'act that the gas supply is repeatedly shut oil and thepossibility of adjustment of gas valve actiondn a direct connectionwitha thermostat is limited but, with mydirect watercontrollcd gassupply a constant gas supply isassurcd even it the faucet should be heldbut. slightly open to! considerable, periods, as in a batlrtuh, andthcwater would be (,crtain types of heaters, in order to overcome this,provide both a Watcr-con-' trolled gas valve as well as a thermostaticand be heated, this control being per controlled valve, thuscomplicating the structune, but my inventionavoids this by providing awater control for the gas supply and a thermostatic control for thewater control whereby the thermostatic control has no connection withthe gas valve although indirectly operative thereon, or, rather,controlling the control thereof.

My invention is fully 'set forth in the. following specification, ofwhich the accompanying drawings form a part, in Whichthe same parts aredesignated by the same reference characters in each of the views, and inwhich Figure l is a vertical section taken through one form of myinvention and showing the gas valve connection; Fig. 2 is a similarview, without the gas valve, but showing a casing provided with a bypassfor the water i and in which the water pressure is c0ntrolled to effectthe gas supply; and Fig. 3 is a similar view of my systen'i of gascontrol applied to a conventional heater and in which a plunger pistonis the gas control, a by-pass also being shown in this form, althoughthe superimposed arrangement shown in Fig. 1 could also be readilyadapted to such a plunger instead of a diaphragm.

In the drawings forming a part; of this application, I have shown aportiona of a \vatenlieater of any desired type, and in which the usualwater coils are provided, but not shown. as well as the usual gasburners and pilot light, also not shown,'as these parts may tion, but Ido show a main gas supply pipe at and a pilot pipe of both incommunication with a main pipea provided with a gas-cock a, both of saidpipes a and a being in communication valve (5 therein carried by a rod aextending above the casing, said valve being normall y held on its seatby a spring'a".

Carried by a bracket [1 is a rect connection, at'the botton thereof,with be of any desired construc with a casing a having adisk using 6 indi diaphragm I) dividing said casing intoupcompartments, said dla andlower phragm being provided withv a relatively large central openingthereth'rough normally closed by a disk 6", perforated as shown, andmounted on a spring controlled rod 6 having a head War the upper endthereof, and said diaphragm carries a plate. perforated, b on the upperside thereof and a yoke b on the lower side thereofi and which, in turn,

carries a rod 71" in line with the rod a and connected therewith byadjustable hooks I) and 1) whereby the action of the diaphragm upwardlyby the watenpressure thereunder may adjustably control upward movementol the disk valve (1 to open the main gas supply to the heater a, allthe parts thus far described being more explicitly set forth in thepatent referred to.

The top of the upper compartment in the casing if is provided with waterpassages and with a central opening for a rod lreely movable therein,said rod being provided with a plate on the lower side therem within thecasing 7/" and which plate is normally held against the. top of saidcasing by means of a spring-1:, said plate being designated and the headIf of the rod ll inipingeson the plate Mounted on the casing If is a rvlindriea1 chamber having: an outlet 0'' adapted for connection with thefaucet, and having a central opening in the top thereof for an ad'-justing screw 1 threaded externally for engagement with the cylinder c"and internally for engagement with a screw rr which is in turn hollowedat its lower end to receive a poston a thermostatic element 0", and iprefer to cap the adjusting screw 1:, as shown, for its protection.

The rod (1 is threaded into the'lower side of the thermostat which. inthe torn: shown, consists of a hollow easing having a plurality ofhollow flanges connected therewith and containing a suitable liquid,such as alcohol. which expands under the influence ol heal 'amltorr'esthe ends of the casing apart in. the nature ot a bellows and. it Idesire a high water?temperature. T adjust the screws Maud clso as topermit an upward movement of the upper end of the thermostatin a degrecorrespondin; to the desired water teinlwrature, after "which upwardmovement oi the upper end "against no resistance until furthermovementis prevented by the saidscrews the lower end of the. thermostatmoves do\\'n\\'ardl v against the springs on, the rods 1' and 6. thusmoving the disk valve If a way from its seat and permittin zarelalivelvl'reellowol'the water through lhediaphramn and lowering thewater presi sureunder}thwdiaphragm \vl-ierehy it may return to normalposition. this being: assisted y the pring a" andqth'e valve u is seatedand lhugas supply sh ll oil to the heater. Wheua l'aueet at :list intpoint is opened the \\':lll'l passes lher to through the casing cylinder1:". and heater 1!. and, as the water pressure und the diaphragm raisesthe latter. the gas valve is opened and the upply in the heater ignitedat the main burne s by the pilot bu ner whereby the water is instantlybeau-d but. in this flexing of llll diaphragm. the disk valve 11'' iseorreondingly moved from its seat to permit a E T AVAILABLE copmittedthen full downward expansion resalts with a consequent result on thevalve 7/", diaphragm, and gas supply, and the gas supply is curtailed ata lower water temperature than it the upward thermostat expansion waspermitted, and it will thus be seen that the temperature of the water,within the limits ot' the thermostat, is under control. adjustably, andthe thermostat effect on the gas valve is rendered possible only throughthe thermostat control of the flow of water through the diaphragm, and asimple, inexpensive, and very efficient automatic control results. Y I

In Fig. 2 I have shown a modification whereby the water is divertedthrough'a by pass d in a casing d by the thermostat expansion todecrease the pressure under the diaphragm of water and thereby, asalready described, reduce or close the gas supply, this arrangement ofthe, by-pass being preferable under some conditions and, while I preferto use the gas valve mechanism described, inasmuch as it is protected byLetters Patent, I do not limit myself to any specific form thereof as Imay adapt my system of control to conventional forms now on the marketwith littleor no alteration thereof.

In the form shown in Fig. 3 a casing e is employed with a by-pass e anda piston 1: instead of the diaphragm, the piston-rod a being inoperative connection-with the.

gas valve, and in this form the piston must be moved upwardly by thewater'pressure behind thesame sufficiently far to be enabled to passthrough ports e 'until the thermostat expansion relieves this pressureby permitting the water to pass through the by-pass by theopening of thevalve therein,

and I may'just-Ias readily, 'althoii'e'h a show-v ingthereot has notbeen deemed necessary,

carry out the superimposed arrangement shown lll F151,, 1, but with thepiston substituted lor the diaphragm.

All these forms show a thermostat control ol a water controlled gassupply, the water control being fully ell'eetive indeprudently of thetlNJ'I'l'lOStilll until a predeternnned temperature of the water hasbeen reached, after which the thermostat controls the gas supply throughits water control.

llaving fully described my invention,

What I claim as new, and desire to secure i by Letters Patent, 1s:

it A water heater provided with a gas supply, a valve for the movableperforated element dividing, said casing, means for connecting saictfellarneijit with said gas valve, a leaky valvh donlfiece tion forcontrolling the perforation in said element, a water inlet conduit onone side of said element, a water outlet conduit on the opposite side ofsaid element, one of said conduits being in connection'with the heater,and 'athermostat in said last men tioned conduihsaid element beingadapted to be moved in the assumed direction by a reduction of pressureon the thermostat being adapted to reduce the pressure on the inlet sideof said element to permit a return thereof toward normal 1 position tocorrespondingly throttle said gas valve. H

2, In a water heater provided with a gas supply, a valve therefor, acasing, a flexible lement dividingsaid easing into com mal' position,latter, a cas ng, a

in'said element, a water-inlet pipe:

to open saidgas said water valve outletzside of said element to opensaid gas valve, said 8th day of October,

partm ents and provided with an. opening,

meafms'for maintaming said element in nor for connecting said.

element, the latter: adapted to move upabove said element and adapted toopen to reduce the pressure jb'eneath said elementand .permitthe latterto move toward'normal position to correspondingly throttle the gassupply valve.

In testimony that I claim the foregoing have signed my name 111' as'myinvention I presence of the subscrlbmg witnesses this HERBERT J. LONG.[he Witnesses: a J. V. LANDRETH,- 1 7 .WM. E. LEARY, Jr.

